<template>
  <div>
    <el-menu
      default-active="1-4-1"
      class="el-menu-vertical-demo"
      @open="handleOpen"
      @close="handleClose"
      :collapse="isCollapse"
    >
      <el-menu-item @click="clickMenu(item)" v-for="item in noChildren" :index="item.path" :key="item.path"> 
        <i :class="'el-icon-' + item.icon"></i>
        <span slot="title">{{item.label}}</span>
      </el-menu-item>

      <el-submenu  v-for="item in hasChildren" :index="item.label" :key="item.path">
        <template slot="title">
          <i :class="'el-icon-' + item.icon"></i>
          <span slot="title">{{item.label}}</span>
        </template>
        <el-menu-item-group v-for="subItem in item.children" :key="subItem.path">
          <el-menu-item @click="clickMenu(subItem)" :index="subItem.path">{{subItem.label}}</el-menu-item>
        </el-menu-item-group>
      </el-submenu>
    </el-menu>
  </div>
</template>

<style>
.el-menu-vertical-demo:not(.el-menu--collapse) {
  width: 200px;
  min-height: 400px;
}
</style>

<script>
export default {
  data() {
    return {
      menu: [
        {
          path: "/",
          name: "home",
          label: "首页",
          icon: "s-home",
          url: "Home/Home",
        },
        {
          path: "/user",
          name: "user",
          label: "用户管理",
          icon: "s-shop",
          url: "/user/user",
        },
        {
          path: "/system",
          name: "system",
          label: "系统管理",
          icon: "s-tools",
          url: "/system/system",
        },
         {
          label: "其他",
          icon: "s-order",
          children: [
            {
              path: "/pageOne",
              name: "pageOne",
              label: "到店自取",
              icon: "user",
              url: "/order/pageOne",
            },
            {
              path: "/pageTwo",
              name: "pageTwo",
              label: "人工服务",
              icon: "goods",
              url: "/order/pageTwo",
            },
          ],
        },
      ],
    };
  },
  methods: {
    handleOpen(key, keyPath) {
      console.log(key, keyPath);
    },
    handleClose(key, keyPath) {
      console.log(key, keyPath);
    },
    clickMenu(item){
      this.$router.push({
        name: item.name
      })
      this.$store.commit('selectMenu', item)
    }
  },
  computed: {
    noChildren(){
      return this.menu.filter((item) => !item.children)
    },
    hasChildren(){
      return this.menu.filter((item) => item.children)
    },
    isCollapse(){
      return this.$store.state.tab.isCollapse;
    }
  },
};
</script>

<style lang="less" scoped>

</style>
